Question

2. Verandah of a school is supported by 10 pillars. Each pillar is 4 m high and its diameters
63 cm. How much concrete mixture is required to construct the pillars? The outer curved surface
is to be whitewashed. Calculate the area to be whitewashed.
id drint to be carved to the oneste was
repared and let in vlindrical vesself die​

Answer 1

Answer:

Step-by-step explanation:

Given, r=63 cm, h=15 m, h=15×100 cm

Curved surface area =2πrh

=2×  

7

22

​

×63×15×100

=594000cm  

2

 

Total number of pillars =4

CSA of one pillar =594000

CSA of 4 pillars =594000×4=2376000 = 237.6m  

2